All categories

3 years ago

Can someone please help me with this I’m sincerely confused?

Physics

2 answers:

Burka [1]3 years ago

6 0

Answer: im sure its the 4th one

Explanation:

77julia77 [94]3 years ago

4 0

Answer:

the fourth one

Explanation:

You might be interested in

A party shop delivers helium-filled balloons to homes and businesses. The owners realize from experience that on hot summer days

kvasek [131]

Answer:As the temperature increases, the helium in the ballon expands.

Explanation:

I took the quiz already

6 0

3 years ago

Read 2 more answers

How much heat do you need to raise the temperature of 150g of ice from -30c to -15c?

Furkat [3]

Heat required = mass (g)*specific heat (c)* Temperature change (ΔT)

Given,
mass = 150 g, specific heat = 4.187 J/g.K, ΔT = -15 -(-30 = -15+30 = 15 K

Therefore,

Heat, H = 150*4.187*15 = 9420.75 J

5 0

4 years ago

Read 2 more answers

Two vectors, r and c, are equal: r = c. Which of the following statements are true? (Select all that apply.)

s344n2d4d5 [400]

Answer:

(A) The y-component of r must be equal to the y-component of c

(B) The x-component of r must be equal to the x-component of c

(F) The unit vector r must be equal to the unit vector c.

Explanation:

If two vectors are equal there are some conditions must be satisfy for the two vectors to be equal.

Let us suppose 2 vectors as,

$A=a_{1}i+ a_{2}j+a_{3}k$ and

$B=b_{1}i+ b_{2}j+b_{3}k$

The conditions for the above two vectors should be equal are:

(1) $a_{1}=b_{1}$ , $a_{2}=b_{2}$ , and $a_{3}=b_{3}$ .

(2) Unit vector of A must be equal to unit vector of B.

(3) Magnitude of both the vectors should be equal.

Now, according to question and observing above conditions of equality for r and c to be equal, the statements should be true are:

(A) The y-component of r should be equal to the y-component of c

(B) The x-component of r should be equal to the x-component of c

(C) The z-component of r should be equal to the z-component of c

(F) The unit vector r should be equal to the unit vector c.

6 0

3 years ago

Two masses traveling at the same speed v₀ collide head on. Nothing is known about the collision other than that it is not comple

alex41 [277]

Answer:

false

Explanation:

Elastic collision: the collision is said to be elastic if the kinetic energy is conserved during the collision.

If the kinetic energy is not conserved, then the collision is not elastic.

So, here no information is given so we cant say about the type of collision.

So, it is False.

4 0

3 years ago

A coil has an inductance of 6.00 mH, and the current in it changes from 0.200 A to 1.50 A in a time interval of 0.300 s. Find th

Andre45 [30]

Answer:

0.026 V

Explanation:

Given that,

Inductance of the coil, L = 6 mH

The current changes from 0.2 A to 1.5 A in a time interval of 0.3 s

We need to find the magnitude of the average induced emf in the coil during this time interval. The formula for the induced emf is given by :

$\epsilon=L\dfrac{dI}{dt}\\\\=6\times 10^{-3}\times \dfrac{1.5-0.2}{0.3}\\\\=0.026\ V$

So, the magnitude of induced emf is 0.026 volts.

5 0

3 years ago